<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
window.onload = function(){
	var title = document.getElementById('title');
	// alert(title.className);//获得元素的属性
	// title.id = 'qqqqqqqqqqqqqqqqqqqqqqqqqq';
	// alert(title.hd);

	// 获得所有的属性（包括自定义属性和特定属性）
	// var re = title.getAttribute('id');
	// alert(re);

	// title.setAttribute('hd','aaaaaaaaaaaaaaaaa');
}
	
</script>
</head>

<body>

<h1 id="title" class="hs" hd="houdun">后盾网 人人做后盾</h1>


</body>
</html>
